Deutsche Windtechnik said the rebranding to Deustche Windtechnik SL "reflects our strategic approach to offer European services from a single source".
GPS has been a wholly owned subsidiary of Deutsche Windtechnik since November 2014.
"The new name makes the Deutsche Windtechnik brand recognisable not just in Spain but right across southern Europe. We will now be seen as being Deutsche Windtechnik, offering the entire range of group services," said Javier Mozo Herrera, managing director of the renamed spanish arm.
The Spanish unit services over 500 turbines from five service stations, according to the company.
Deutsche Windtechnik Group has the capacity to service Siemens, Vestas, NEG Micon, Nordex and Senvion and it is currently testing a service portfolio for Gamesa turbines.